1 /***************************************************************************
2 * Copyright (C) 2005-08 by the Quassel Project *
3 * devel@quassel-irc.org *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) version 3. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
21 #include <QFontMetrics>
22 #include <QGraphicsSceneMouseEvent>
24 #include <QTextLayout>
27 #include "chatlinemodel.h"
30 ChatItem::ChatItem(const QPersistentModelIndex &index_, QGraphicsItem *parent) : QGraphicsItem(parent), _index(index_) {
31 QFontMetricsF *metrics = QtUi::style()->fontMetrics(data(ChatLineModel::FormatRole).value<UiStyle::FormatList>().at(0).second);
32 _lineHeight = metrics->lineSpacing();
33 _lineLeading = metrics->leading();
37 ChatItem::~ChatItem() {
41 QVariant ChatItem::data(int role) const {
42 if(!_index.isValid()) {
43 qWarning() << "ChatItem::data(): Model index is invalid!" << _index;
46 return _index.data(role);
49 int ChatItem::setWidth(int w) {
50 if(w == _boundingRect.width()) return _boundingRect.height();
51 int h = heightForWidth(w);
52 _boundingRect.setWidth(w);
53 _boundingRect.setHeight(h);
57 int ChatItem::heightForWidth(int width) {
58 if(data(ChatLineModel::ColumnTypeRole).toUInt() != ChatLineModel::ContentsColumn)
59 return _lineHeight; // only contents can be multi-line
61 QVariantList wrapList = data(ChatLineModel::WrapListRole).toList();
64 for(int i = 0; i < wrapList.count(); i+=2) {
65 if(wrapList.at(i+1).toUInt() - offset < width) continue;
68 if(offset < wrapList.at(i-1).toUInt()) offset = wrapList.at(i-1).toUInt();
75 return lines * _lineHeight;
78 void ChatItem::layout() {
80 _layout = new QTextLayout(data(MessageModel::DisplayRole).toString());
82 // Convert format information into a FormatRange
83 QList<QTextLayout::FormatRange> formatRanges;
84 UiStyle::FormatList formatList = data(MessageModel::FormatRole).value<UiStyle::FormatList>();
85 QTextLayout::FormatRange range;
87 for(i = 0; i < formatList.count(); i++) {
88 range.format = QtUi::style()->mergedFormat(formatList.at(i).second);
89 range.start = formatList.at(i).first;
90 if(i > 0) formatRanges.last().length = range.start - formatRanges.last().start;
91 formatRanges.append(range);
93 if(i > 0) formatRanges.last().length = _layout->text().length() - formatRanges.last().start;
94 _layout->setAdditionalFormats(formatRanges);
98 _layout->beginLayout();
100 QTextLine line = _layout->createLine();
104 line.setLineWidth(width());
106 line.setPosition(QPointF(0, h));
109 _layout->endLayout();
112 void ChatItem::clearLayout() {
117 void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
118 Q_UNUSED(option); Q_UNUSED(widget);
120 _layout->draw(painter, QPointF(0,0), QVector<QTextLayout::FormatRange>(), boundingRect());
124 void ChatItem::layout() {
125 if(!_layout.additionalFormats().count()) return; // no text set
126 if(_width <= 0) return;
127 prepareGeometryChange();
128 QFontMetrics metrics(_layout.additionalFormats()[0].format.font());
129 int leading = metrics.leading();
131 _layout.setTextOption(textOption());
132 _layout.beginLayout();
134 QTextLine line = _layout.createLine();
135 if(!line.isValid()) break;
136 line.setLineWidth(_width);
137 if(textOption().wrapMode() != QTextOption::NoWrap && line.naturalTextWidth() > _width) {
138 // word did not fit, we need to wrap it in the middle
139 // this is a workaround for Qt failing to handle WrapAtWordBoundaryOrAnywhere correctly
140 QTextOption::WrapMode mode = textOption().wrapMode();
141 textOption().setWrapMode(QTextOption::WrapAnywhere);
142 _layout.setTextOption(textOption());
143 line.setLineWidth(_width);
144 textOption().setWrapMode(mode);
145 _layout.setTextOption(textOption());
148 line.setPosition(QPoint(0, height));
149 height += line.height();
153 } QDateTime _timestamp;
157 QRectF ChatItem::boundingRect() const {
158 return _layout.boundingRect();
161 void ChatItem::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
162 Q_UNUSED(option); Q_UNUSED(widget);
163 _layout.draw(painter, QPointF(0, 0));
169 void ChatItem::mouseMoveEvent ( QGraphicsSceneMouseEvent * event ) {
170 qDebug() << (void*)this << "moving" << event->pos();
171 if(event->pos().y() < 0) {
172 QTextCursor cursor(document());
173 //cursor.insertText("foo");
174 //cursor.select(QTextCursor::Document);
176 } else QGraphicsTextItem::mouseMoveEvent(event);